Don’t remember all the brands but after looking at a ton of different toyhaulers last spring, I recall several models that were under 12’. Generally any of the non high ceiling models.
1 was a Coachman something and I recall a Wolfpack model also.
I wasn’t too picky between the 2 but ended up with a high ceiling model that sits about 12-6 high. Now after glamping in it for a week, the advantage I see is that the upper bed can remain deployed and still use the lower couches / table with decent headroom. So no need to stow the upper bed daily.
Open vs separate toy area? Unless going with a big rig, the open concept makes for a lot more roomy feel inside imo